Function of power flow in reverse gear Function of program selection" S" - GF27.10-P-3017N

TRANSMISSION 722.9 in MODEL 171.4, 203, 209, 211, 215, 219, 220, 230 

TRANSMISSION 722.9 in MODEL 463.303 /340 /341 

The Ravigneaux gear set consists of the following components:

• Short planet gears (PL2k)
• Long planet gears (PL2l)
• Small internal-geared wheel (5)
• Dual planet carrier (6)
• Sun gear (7)
• Large internal-geared wheel (8)

The single front planetary gear system consists of the following components:

• Planet gears (PL9)
• Internal-geared wheel (12)
• Planet carrier (13)
• Sun gear (14)

The single rear planetary gear system consists of the following components:

• Planet gears (PL6)
• Internal-geared wheel (9)
• Planet carrier (10)
• Sun gear (11)

Power flow in reverse gear, program selection "S", function 

The following multi-disk brakes and multi-disk clutches are engaged:

• BR multi-disk brake BR
• Multi-disk brake B1 (B1)
• Multi-disk clutch K3 (K3)

Ravigneaux gear set 

The small internal-geared wheel (5) is driven by the transmission input shaft. The long planet gears (PL2l) roll over the stalled sun gear (7) and transmit the increased torque and reduced rotational speed as a result to the dual planet carrier (6).

Single rear planetary gear system 

The internal-geared wheel (9) rotates at the same speed due to the mechanical connection to the dual planet carrier (6). The planet gears (PL6) roll on the sun gear (11). The sun gear (11) reverses its direction due to the stalled planet carrier (10).

Single front planetary gear system 

There is a connection between the sun gear (14) and sun gear (11) via the engaged multi-disk clutch K3 (K3). As a result sun gear (14) rotates at the same speed and direction of rotation as the sun gear (11) and drives the planet gears (PL9). The increased torque and reduced rotational speed as a result are transmitted via the planet carrier (13) to the transmission output shaft.

The transmission output shaft therefore rotates in the direction of rotation of the engine at reduced rpm relative to the transmission input shaft.

	Torque converter, location/task/design/function		GF27.20-P-5100N
	Planetary gear set, location/task/design/function	Ravigneaux gear set	GF27.50-P-5100N
		Simple planetary gear system	GF27.50-P-5100NN
	Multi-disk brake, location/task/design		GF27.51-P-5104N
	Multi-disk clutch, location/task/design		GF27.51-P-5103N